但是因为它以附加物的形式出售，其他频道实际上提高了它的价格。
But because it is sold as an add-on, other channels are in effect increasing its price.
基础有线电视包的价格上升并非由HBO引起，但是因为HBO作为附加服务出售，其它频道实际又在涨价。
HBO did not cause the rise in the price of basic-cable packages. But because it is sold as an add-on, other channels are in effect increasing its price.
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